Category: Science

Turns Out it’s not a Falcon Stage

Corrected identification of object about to hit the moon:

Short version : back in 2015, I (mis)identified this object as 2015-007B, the second stage of the DSCOVR spacecraft. We now have good evidence that it is actually 2014-065B, the booster for the Chang’e 5-T1 lunar mission. (It will, however, still hit the moon within a few kilometers of the predicted spot on 2022 March 4 at 12:25 UTC, within a few seconds of the predicted time.)

Do fish feel pain?

Puts a different spin on that fishing trip after I’ve always told myself “it’s ok, fish don’t feel pain” (to paraphrase Kurt Cobain)…

I was the first to identify the existence of nociceptors in a fish, the rainbow trout, in 2002. These are specialised receptors for detecting injury-causing stimuli, and their physiology is strikingly similar to those found in mammals, including humans. Since then, my laboratory and others across the world have shown that the physiology, neurobiology, molecular biology and brain activity that many fish species show in response to painful stimuli is comparable to mammals.

Source: There is ample evidence that fish feel pain | Fish | The Guardian

Universe as a self-learning computer

The researchers explain the universe as a learning system by invoking machine learning systems. Just like we can teach machines to perform unfolding functions over time, that is, to learn, the laws of the universe are essentially algorithms that do work in the form of learning operations.

Source: Physicists working with Microsoft think the universe is a self-learning computer

Muons’ Magnetic Moment

Evidence is mounting that a tiny subatomic particle called a muon is disobeying the laws of physics as we thought we knew them, scientists announced on Wednesday.

The best explanation, physicists say, is that the muon is being influenced by forms of matter and energy that are not yet known to science, but which may nevertheless affect the nature and evolution of the universe. The new work, they said, could eventually lead to a breakthrough in our understanding of the universe more dramatic than the heralded discovery in 2012 of the Higgs boson, a particle that imbues other particles with mass.

Source: Finding From Particle Research Could Break Known Laws of Physics – The New York Times

So Long, and Thanks for All the Krill

Perhaps they’re trying to tell us something, Like the dolphins who do a double-backward somersault through a hoop while whistling the Star Spangled Banner, the whales may be sending us a message that we’re misinterpreting as an adorably sophisticated trick. The oceans are warming, the seas are rising, and maybe—just maybe—the whales have had enough. They’ve gathered as many young humpbacks as possible to come together and send one final message: so long, and thanks for all the krill. Or maybe they’re talking to a giant space probe. Who knows.

Source: Humpback whales are organizing in huge numbers, and no one knows why

On Aliens

Aliens exist, there’s no two ways about it. There are so many billions of stars out there in the universe that there must be all sorts of different forms of life. Will they be like you and me, made up of carbon and nitrogen? Maybe not. It’s possible they’re here right now and we simply can’t see them

— Read on www.theguardian.com/lifeandstyle/2020/jan/05/astronaut-helen-sharman-this-much-i-know

Spaying and Neutering Dogs

Well this is an eye-opening piece that has caused me to reconsider lots of presuppositions…

In other words, to solve the problem of our unwillingness to keep track of our dogs, we do not address our own unwillingness. To address the overpopulation of unwanted dogs, we do not address the overpopulation. Instead, we non sequitur: we take brand-new dogs and introduce them into our homes by first putting them through a surgery at six, four, or even three months of age. The professed solution, in the United States, is to spay or neuter all the new ones.

Source: Opinion | Dogs Are Not Here for Our Convenience – The New York Times

Chernobyl on the Seine

In 1933 nuclear physicist Marie Curie had outgrown her lab in the Latin Quarter in central Paris. To give her the space needed for the messy task of extracting radioactive elements such as radium from truckloads of ore, the University of Paris built a research center in Arcueil, a village south of the city. Today it’s grown into a crowded ­working-class suburb. And the dilapidated lab, set in an overgrown garden near a 17th century aqueduct, is sometimes called Chernobyl on the Seine.

Source: France Is Still Cleaning Up Marie Curie’s Nuclear Waste – Bloomberg